In which of the following stage chromosome appears filamentous?

Which of the following stage is the chromosome?

Leptotene also known as leptonema is the first stage of prophase I during which individual chromosomes begin to condense into long strands within the nucleus which are loosely interwoven. However, the two sister chromatids are still so tightly bound that they are indistinguishable from one another.

At which of the following stage the chromosomes appear single thin and thread like?

So, the correct answer is ‘Leptotene‘.

In which stage of meiosis do the chromosomes appear as thin threads?

The first stage of meiotic prophase I. After DNA replication, the chromatin condenses to form visible chromosomes which appear as long thin threads comprising pairs of replicated DNA molecules.

What is the same in all parts of homologous chromosomes?

Homologous chromosomes are similiar but not identical. Each carries the same genes in the same order, but the alleles for each trait may not be the same. … The maternal and paternal chromosomes in a homologous pair have the same genes at the same loci, but possibly different alleles.

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In which of the following state a chromosome is minimum coiled?

So the correct option is “interphase“.

Which phase do chromosomes appear thread like?

Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word “mitosis” means “threads,” and it refers to the threadlike appearance of chromosomes as the cell prepares to divide.

What is the correct sequence of cell cycle?

The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.

When chromosomes are thin they are called?

At the leptotene stage the chromosomes appear as long, thin threads. At pachytene they pair, the corresponding portions of the two chromosomes lying side by side. The chromosomes then duplicate and contract into paired chromatids.

What are the phases of mitosis?

These phases are prophase, prometaphase, metaphase, anaphase, and telophase. Cytokinesis is the final physical cell division that follows telophase, and is therefore sometimes considered a sixth phase of mitosis.

Which is the longest stage in meiosis 1?

Prophase I. Prophase I is by far the longest phase of meiosis (lasting 13 out of 14 days in mice). During prophase I, homologous maternal and paternal chromosomes pair, synapse, and exchange genetic information (by homologous recombination), forming at least one crossover per chromosome.

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